Robert O. James
33Patents
13h-index
51Co-inventors
80Inventor score
Filing activity: Feb 1, 1990 → Aug 18, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5698839A | Magnetically encodable card having magnetic pigment uniformly dispersed in plastic | Physics | 106 | Expired |
| US5217804A | Magnetic particles | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4990276A | Magnetic dispersion | Physics | 32 | Expired |
| US5714747A | Magnetic card and reader system | Physics | 30 | Expired |
| US5432050A | Photographic element having a transparent magnetic recording layer | Physics | 28 | Expired |
| US5395743A | Photographic element having a transparent magnetic layer and a process of preparing the same | Physics | 26 | Expired |
| US6832037B2 | Waveguide and method of making same | Chemistry; Metallurgy | 24 | Expired |
| US6372338B1 | Spherical magnetic particles for magnetic recording media | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5427900A | Photographic element having a transparent magnetic recording layer | Physics | 19 | Expired |
| US5252441A | Transparent magnetic recording layers and photographic elements containing the same | Physics | 19 | Expired |
| US5254449A | Photographic element containing thinb transparent magnetic recording layer and method for the preparation thereof | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5233995A | Encapsulated particles useful as contrast agents in ultrasound and x-ray imaging compositions and methods | Human Necessities | 17 | Expired |
| US5792380A | Ink jet printing ink composition with detectable label material | Chemistry; Metallurgy | 15 | Expired |
| US7081295B2 | Method of manufacturing a polymethylmethacrylate core shell nanocomposite optical plastic article | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5498512A | Photographic element having a transparent magnetic recording layer | Electricity | 12 | Expired |
| US6048677A | Abrasive lubricant layer for photographic element | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6221296A | Method of making a magnetically encodable card having magnetic particles uniformly distributed throughout | Physics | 11 | Expired |
| US5576266A | Magnetic layer in dye-donor element for thermal dye transfer | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5434037A | Photographic element having a transparent magnetic recording layer | Physics | 9 | Expired |
| US7091271B2 | Core shell nanocomposite optical plastic article | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5747234A | Photographic element | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5230818A | Coating compositions for master media for anhysteretic recording | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6001550A | Photographic element having a annealable transparent magnetic recording layer | Physics | 6 | Expired |
| US7435765B2 | Additive for ink jet ink | Chemistry; Metallurgy | 6 | Expired |
| US6317191A | Process for viewing a positive motion picture film scene image with integral audio soundtrack | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.